Microcirculation of the diabetic foot

Area of Science:

• Vascular biology
• Diabetology
• Neurology

Background:

• Microcirculation impairment is a key issue in diabetic foot complications.
• Endothelial dysfunction and biochemical pathway derangements contribute to this impairment.
• Diabetic neuropathy affects the nerve-axon reflex, crucial for blood vessel response.

Purpose of the Study:

• To explore the mechanisms behind microcirculation impairment in the diabetic foot.
• To understand the role of nerve-axon reflex dysfunction in diabetic foot ischemia.
• To link microcirculatory changes to poor wound healing in diabetes.

Main Methods:

• Review of studies on diabetic foot microcirculation over the last decade.
• Analysis of the role of endothelial dysfunction and biochemical pathways.
• Investigation of the nerve-axon reflex and vasodilatory responses.

Main Results:

• Microcirculation impairment is consistently observed in the diabetic foot.
• Loss of nerve-axon reflex prevents adequate vasodilation during stress.
• Functional ischemia occurs despite normal blood flow due to impaired response.
• These changes are strongly associated with diabetic neuropathy.

Conclusions:

• Impaired microcirculation and nerve-axon reflex dysfunction are significant factors in diabetic foot complications.
• These vascular and neural alterations contribute to the high incidence of poor wound healing in diabetic patients.
• Targeting microcirculation and nerve function may improve outcomes for the diabetic foot.